Firing regulator



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' FIRING REGULATOR Filed Oct. 20, 1937 4 Sheets-Sheet 2 E 8 E w ill! wQM. O r H v m M r E o r w M v r m 0 5 .mm ,2, .7 I. L mm mm wv H a H aam W n 5 :i

April 18, 1939. c. G. PETTER 2,154,770

FIRING REGULATOR Filed 001:. 20, 1937 4 Sheets-Sheet 3 TE i FIGS) ATTORNEYs April 18, 1939. c, PETTER 2,154,770

FIRING REGULATOR Filed Opt 20, 1937 4 Sheets-Sheet 4 .FisJO.

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co' f ATTORNEYS.

Patented Apr. 18, 1939 UNETED STTES ATENT Application October 20, 1937,Serial No. 170,021

. In France November 30, 1936 2 Claims.

The present invention relates to light automatic firearms permitting ofvolley firing and to quickfiring pistols. The object comprisesimprovements in firearms of this kind and in particular includes thepurpose of lightening and simplifying the construction, of facilitatingthe dismounting and the upkeep and of improving the efificiency of same.

Said improvements are mainly characterized in that the rate moderator iscombined with three levers or fingers which are secured togetherangularly and of which the first serves to impart to the moderator anangular impulse under the impact of the breech bolt, the second servesas a breech stop and the third serves to connect the whole arrangementto the moderator acting as a cam in order to determine the instant ofrelease of the breech.

The accompanying drawings show by way of :0 example only an embodimentof a quick-firing pistol according to the invention.

Figure 1 shows the pistol in partial elevation with axial section.

Figure 2 is a'similar view to Figure 1 but with 25 partial axial sectionand without a loader.

" Figure 3 is a side elevation of the firearm.

Figure 4 is a transverse section through the line I-I of Figure 2.

Figure 5 is a transverse section through the 30 line IIII of Figure 2.

Figure 6 is an elevation, with partial vertical section, of the buttcarrier block, the removable cheek being removed.

Figure 7 is a corresponding end view of the same as seen from the front.

Figure 8 is a transverse section through the line IIIIII of Figure 6.

Figure 9 is a side elevation of the removable cheek or" the butt carrierblock.

Figure 10 is a corresponding end view of the same as seen from the rear.

Figure 11 is an end view of the same part as seen from the front.

Figure 12 is a section through the line IVIV of Figure 9.

Figure 13 is an elevation of the removable cheek as seen from its innerface.

The quick-firing pistol comprises, a light framework formed by a sheetmetal casing I, provided with a rear opening 2 and adapted toaccommodate the removable assembly 3. Said framework forms a breechcasing and at its front portion it is closed by a part 5 perforated forthe passage of the end of the barrel 6 which it guides. A sight I isfixed on the upper face of the part 6.

The breech 8 is guided rectilinearly in the breech casing I and onslideways or bearing surfaces 9 of the assembly 3. It is returned to itsextreme forward position by the recuperator spring I0.

The spring I0 is mounted in known manner and permanently stretched on arod II between a fixed flange I2 and a washer it which can slide alongthe rod when the breech recoils. When the breech 8 is in its forwardposition or when the rod I I is withdrawn from the firearm with thespring ID, the washer I4 abuts against the flange of a separately-fixedhead I5. 'At the opposite end another head I6 engages in a conicalcavity of the butt carrier block 4 to centre the spring IB-rod IIassembly.

When the spring I0 urges the breech forward again, it looks the same onthe barrel 6, by the known arrangement of tongues and grooves I7, thebarrel being anchored on the framework by means of a connecting rod I8pivoted on a pin I9 which also has the function of fixing the front ofthe assembly 3 on the breech casing.

In the assembly 3 there is provided means for the pasage of the magazinewhich is locked by a rocker 2| pivoted at 22 and returned by a spring23. This lock acts by the engagement of its upper nose in an opening 24of the case of the loader. It sufiices to push back the lower nose ofthe rocker 2| to disengage the loader.

The trigger 25 is pivoted at 26 on the assembly 3 and returned by aspring 21 interposed between its heel 28 and a breech, stop lever 29pivoted at 30. When the trigger is pressed it acts on the sear 3| tolift the front end of the lever 23 and to move away the end 32 of thismember.

A butt carrier block 4 engages in the rear opening of the breech casingI and its tenon 33 (Figure '7) penetrates into a corresponding notch ofthe assembly 3, a single pin 34 fixing both the rear part of theassembly 3 and the butt carrier block 4 on the breech casing I. The pins34 and I9 are threaded at their end to screw into the tapped hole ofplates .35 provided on the breech casing I (Figure 3). They are held byresilient blades 36 of which the free end is provided with a nipplewhich engages in a conical groove provided in the side wall of thebreech casing.

The butt carrier block 4 receives at its lower portion a handle 31 whichis gripped by the hand of which one of the fingers acts on the trigger25. Said handle optionally enables the firearm to be held and utilizedin the manner of a pistol.

The butt 38 which enables the arm to be shouldered is provided with afront bracket 39 held by a threaded rod 40 and which adjusts itself bymeans of its tenon 4| in the slideways 42 of the block 3 (Figures 1 and6) on which it is locked by the engagement of a nose 43 in a notch 44.The nose 43 is provided with a resilient blade 44 fixed at 45 and whichis bent by pressure on a knob 46 when it is desired to release the nose43 from the notch 44. The block 4 is recessed to contain a ratemoderator of the oscillating mass type which is resiliently returned. Asshown more particularly in Figures 6-8 the rate moderator is a mass 4'!loosely mounted on a pin 48 of the block 4 and subjected to the actionof a helical spring 49 arranged in a groove 50 coaxial with the hub 5i,said spring being attached on the one hand at 52 to the mass 41 and onthe other hand at 53 to the block 4. The spring 55] constantly tends toreturn the mass 41 in the direction of the arrow (Figures 1 and 6).

Three levers or fingers are constructed in one piece pivoted on an axleor pin 54 mounted on the block 3. The lever 55 is pivoted to aconnecting rod 56 the free end of which is arranged in the path of aboss 51 of the mass 41. The lever 58 bears by means of a roller 59 onthe periphery 6!) of the mass shaped as shown in the drawings. The lever5| has a nose 62 which engages in an axial groove of the breech stoplever 29. The cavity 63 of the block 4 is closed by a cheek 54 (Figures9-13) perforated at 65 for the passage of the pins 48 and 54.

Said cheek is locked on the block 3 by a bolt 55, which is returned by aspring 61 (Figures 12 and 13) and of which the nose engages in acorresponding staple or groove of the block 4. Said bolt is released bymanually actuating the knurled or checkered plate 68. The percussionmechanism of the firearm comprises a striker 69 guided in a perforation60 of the breech 8 and subjected to the action of a spring 10 whichbears against a dog H pivoted at 12 on the breech.

The operation of the arm is as follows:

After a charged magazine has been introduced into the firearm, thebreech 8 is brought to the cocked position by pulling a knob 13 (Figure5), the stem of which slides in a groove 14 of the breech casing i. Saidknob is freely engaged in a perforation of the breech when the latter isintroduced into the casing I separate from the block 4. The knob 73 canbe pushed home when it is placed opposite a hole 15 (Figure 2)terminating in a groove 74. In any other position it is retained on thebreech by pressure of its flange ll against the breech casing I.

In the movement of the breech up to its cocked position, the dog Hpasses freely between the noses 32 of the lever 29 and in the axialgroove of the nose 62. The notches 18 of the breech 8 pass over thenoses 32 on which they hook when the knob 13 is released. The nose B2 isat this instant moved out of the notches I8 owing to the fact that theroller 49 bears on the point of the contour 50 which is closest to theaxis of the moderator.

When the trigger is pressed the sear 3| lifts the front end of the lever29 and moves away the noses 32. The breech is released and urged forwardagain by the recuperator spring.

In its forward travel:

Said breech extracts, by means of its face 19, the upper cartridge ofthe loader and introduces it into the firing chamber.

It looks itself on the barrel.

The nose 1 l of the dog encounters the stop and hits the striker G9which fires the cartridge introduced into the firing chamber.

The recoil effect first of all acts both on the barrel and on thebreech, then the connecting rods l8 act in known manner to break theconnection between the barrel and the breech and the latter continuesits recoil movement alone.

In this movement:

It carries along the case of the cartridge which has been fired. Theextraction of the case is effected by an extractor 8| (Figure 5) of aknown arrangement.

The case which has been carried along abuts against the ejector 82 andis projected through the opening 83 of the breech casing I.

The breech strikes the boss 84 of the lever 55 which, by means of theconnecting rod 56, imparts an angular impulse to the mass 41. From thebeginning of said impulse the contour 60 acts to lift the nose 62 whichengages in the notch 18 of the breech and holds it until the mass 41which is retracted by the spring 50 has again taken up the angularposition which it occupies in the drawings.

The movement of the breech, with the percussion of a cartridge at theend of each forward travel, continues so long as the trigger is pressed,The rate of firing in a volley is determined by the moderator.

A sight 85, of any appropriate arrangement, is fitted on to the breechcasing.

What I claim as my invention and desire to secure by Letters Patent is:

In an automatic firearm with movable breech and a revolving moderatorhaving a cam shaped periphery, in combination, a pivoting three armlever interposed between the breech and the moderator, the arms of saidlever constituting an upper arm, a rear lower arm and a fore lower arm,and said three arm lever being adapted to receive the percussion of thebreech directly upon its upper arm, a link connected to the end of saidupper arm for transmitting the percussion of the breech to themoderator, the rear lo-wer arm of the lever bearing upon the camshapedperiphery of the moderator and a nose at the end of the fore lower armof said lever for momentarily locking the breech.

2. In an automatic firearm with movable breech and moderator having acam shaped periphery, in combination, a three arm lever the arms of saidlever constituting an upper arm, a rear lower arm and a fore lower arm,said lever being pivoted in a block closing the breech casing andinterposed between the breech and the moderator also arranged in saidblock and adapted to receive the percussion of the breech directly uponits upper arm, a link connected to the end of the said upper arm fortransmitting to the moderator the percussion of the breech, the rearlower arm of the lever bearing upon the cam-shaped periphery of themoderator and a nose at the end of the fore lower arm of the said leverfor momentarily locking the breech.

CHARLES GABRIEL PETTER.

